I went to Disneyland for Christmas in 2001, and it was the most magical experience of my entire life. From the tacky but beautiful decoration of "it's a small world holiday" to the absolutely marvelous Holiday Haunted Mansion. As a matter of fact, the NBC haunted mansion is one of the greatest and most fun experiences I have had on any Disney property. From what I have seen of the Magic Kingdom's holiday festivities, Disneyland has it totally beat (save maybe the candlelight procession).
I mean, come on.

I mean, come on.